Improvement in rock-drilling machines



NATHAN BALL &J. A. STANSBURY.

Improvement in Rock DriHing Machines.

No. 121,315. I Patented Nov- 28,1871.

ifi'mes-Pes.

\ v dim 4a UNITED STATES PATENT OFFICE.

NATHAN BALL, OF EAST PALESTINE, AND JOSEPH A. STAN SBURY, OF SALEM, OHIOSAID STANSBURY ASSIGNS HIS RIGHT TO SAID BALL.

IMPROVEMENT IN ROCK-DRILLING MACHINES.

Specification forming part of Letters Patent No. 121,315, dated November28, 1871.

To all whom it may concern:

Be it known that we, NATHAN BALL, of East Palestine, and J OSEPH A.STANSBURY, of Salem, in the county of (lolumbiana and in the State ofOhio, have invented certain new and useful Improvements in Coal and RockDrilling Machines; and do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawing making a part of this specification, in which-Figure 1 is a side elevation of our device. Fig. 2 is a front elevationof the drill-head. Fig. 3 is a rear elevation of the same. Fig. 4 is ahorizontal section of the standard on the line w m a: of Fig. l, andFig. 5 is a plan view of the lower side of the drill-stock andfeed-rack.

Letters of like name and kind refer to like parts in each of thefigures.

The object of our invention is the production of a simple, efficient,and cheap device for drilling rock, coal, &c., and it consists,principally, in the peculiar construction of the drill-standard wherebythe same may be quickly adjusted to any desired length, substantially asand for the purpose hereinafter'specified. It consists, further, in themeans employed for attaching the drill-stock to and rendering the sameradially adjustable upon said head, substantially as and for the purposehereinafter shown. It consists, finally, in the means employed forimparting a longitudinal or feeding motion to the drill-stock and drill,substantially as and for the purpose hereinafter specified.

In the annexed drawing, A represents a metal pipe closed at one end bymeans of a head, B, and having at and immediately above its opposite endan exterior screw-thread, a. Fitted to or upon the threaded end of thepipe A is a metal sleeve, 0, the outer end 0 of which has an interiordiameter corresponding with the diameter of said pipe, while the balanceof said sleeve corresponds in interior dimensions with the exterior ofthe latter, and is provided with an internal screw-thread that issimilar to and engages with the exterior screw-thread of the same.Fitted loosely within the sleeve 0 and pipe A is a corresponding metalbar, D, having a slight points longitudinally upon said bar, passtransversely through the same, and may each be caused to coincide with asimilar hole, 0, that is provided in and through the outer end of thesleeve 0, so as to permit of the insertion within. said holes a and d ofa pin, E, so as to secure said sleeve and bar in their relativelongitudinal positions. The outer face of the head B being serrated,this portion of the device which forms the standard or support for theoperating mechanism is complete and operates as follows: The pin E beingremoved, the head B is placed against the roof of the mine and the bar Dallowed to drop downward until its outer end rests upon the floor of themine, after which said bar and the sleeve 0 are locked together by thereplacing of said pin within the openings 0 and d, and said .sleeveunscrewed upon or from the pipe A until the point 0 and head B arepressed with sufficient firmness against said roof and floor to hold thestandard in position. Fitted loosely to or upon the standard is a head,F, composed of a rectangular block of metal provided at one side with aset-screw, G, which passes inward and bears against said standard so asto permit the same and said head to be secured in any desired relativepositions. Upon the opposite side of said head from the set-screw aretwo lugs, f, within which is journaled a hollow shaft, H, to or upon oneend of which is secured a metal plate, I, which has a general size andshape corresponding to that of the contiguous face of said head, thewhole being so arranged as to enable said plate to revolve upon or withsaid hollow spindle in a plane parallel to the line of said standard. Abox or bearing, K, provided with a round opening, is rigidly attached toor upon the outer face of the plate I for the purpose of receiving thedrill-stock L, which stock is formed of a round bar provided at one endwith a socket for the reception of the shank of the drill M, while uponthe opposite end of said drill-stock is secured a crank, N, by means ofwhich the same and said drill are. rotated when desired. A pin, l,passing through the socket end of the stock and through the shank of thedrill firmly secures the same together, while a second pin, 0, passinginward through a corresponding opening provided in and through the plateI, with its inner end engaging with one of a series of similar openings,0, formed within the contiguous face of the head, enables said plate tobe secured in radial position, so as thereby to insure any desired angleof the drill with relation to the standard.

In order that the necessary feed may be given to the drill-stock anddrill a right-angled groove, 1', is out within the outer face of theplate I, immediately beneath and in a line with said stock, which groovereceives a corresponding metal bar, P, one end of which is connectedwith said stock immediately inside of the crank by means of a lug, 12,which embraces a reduced portion or journal of the same. The lower edgeof the bar P is provided with a toothed rack, which meshes with acorresponding pinion, Q, that is secured upon one end of a shait, g,which passes through the hollow spindle H, and is provided upon itsopposite end with a crank, 1%. As thus arranged it will be seen that byrotating the shaft q and pinion Q, the rack-bar and drill-stock will bemoved longitudinally within their bearings so as to cause the drill toapproach to or recede from the rock being operated upon.

The device thus constructed is capable of use in any place where similarmechanism is employed, can be adjusted to or removed from position in amoments time, and enables the operator to pierce the rock at any desiredangle or at any point between the roof and floor of the mine 5 and,while possessing these advantages, is so simple in construction as tocause it to cost materially less than similar devices in ordinary use.

Having thus fully set forth the nature and merits of my invention, whatI claim as new is- 1. The pipe A, threaded exteriorly upon one end, andprovided at its opposite end with the head B, the iuteriorlythreadedsleeve 0 fitted over the end of said pipe, and the bar D fitted withinsaid pipe and sleeve and connected to or with the latter by means of thepin E, the whole forming the drill-standard, substantially as speciiied.

2. The shatt H, the plate I, the box K, the pin 0, and the holes 0, incombination with the drillhead F and with the drill-stock L,substantially as and for the purpose shown.

3. The rack-bar P, pinion Q, shaft q, and crank B, when the severalparts are constructed as described, and combined with the drill-stock Land drill-head F, substantially as and for the purpose set forth.

In testimony that we claim the foregoing we have hereunto set our handsthis 26th day of July, 1871.

NATHAN BALL. JOSEPH A. STANSBURY.

Vitnesses .lt. H. G-ARRIGUEs, N. B. GARRIGUES. (124-)

